Two new species of Rhogadopsis Brèthes (Braconidae: Opiinae) as solitary
parasitoids of Merochlorops species complex (Diptera: Chloropidae) from India

Three new species of the genus Choeras Mason, 1981 (Hymenoptera: Braconidae, Microgastrinae) from Iran

Tersilochinae (Hymenoptera: Ichneumonidae) of Papua New Guinea: genera Allophrys Förster and Probles Förster

Systematics of the parasitoid wasp genus Aulacus Jurine (Hymenoptera: Evanioidea: Aulacidae) from Australia

A new record of the genus Orientalicesa Koçak & Kemal, 2010 (Hymenoptera: Vespidae: Eumeninae) from Vietnam

New species of Dryocosmus Giraud gallwasps from California (Hymenoptera: Cynipidae: Cynipini) galling Chrysolepis Hjelmq. (Fagaceae)

The ant genus Rhopalomastix (Hymenoptera: Formicidae: Myrmicinae) in Southeast Asia, with descriptions of four new species from Singapore based on morphology and DNA barcoding

Description of the male of Darditilla araxa (Cresson, 1902) (Hymenoptera, Mutillidae) with geographical distribution, biological notes and key to males of Brazil

Validation of Psomizopelma metallicum Gibson, 2018 (Hymenoptera: Eupelmidae)

Revision of the genus Polistes Latreille (Hymenoptera: Vespidae: Polistinae) in the Philippine Islands

Anagyrus Howard (Hymenoptera: Encyrtidae) parasitoids of the invasive Delottococcus aberiae (De Lotto) (Hemiptera: Pseudococcidae) from South Africa, with description of two new species

The genus Sakencyrtus Hayat (Hymenoptera: Chalcidoidea: Encyrtidae) from India with description of a new species

Taxonomic notes and Corrigendum for the manuscript entitled “Ichneumonid wasps of the subfamily Mesochorinae (Hymenoptera: Ichneumonidae): new replacement names, combinations and an updated key to the World genera” ARAUJO et al. (2018), Zootaxa, 4521: 052–060.

The ant genus Myopias Roger, 1861 (Hymenoptera: Formicidae: Ponerinae) in Thailand, with descriptions of three new species

Review of the genus Paramesius Westwood, 1832 (Hymenoptera: Diapriidae, Spilomicrini) from Russia, with description of four new species

Taxonomic revision of the Western Palaearctic bees of the subgenus Pseudomegachile (Hymenoptera, Apiformes, Megachilidae, Megachile)

Three new species of Zaischnopsis Ashmead (Hymenoptera: Chalcidoidea: Eupelmidae) from Southern China, with redescription of Zaischnopsis tubatius (Walker)

Two new species of Dentilabus Heinrich (Hymenoptera: Ichneumonidae: Ichneumoninae) from Japan and Korea, with redefinition of the genus

New data on the Iberian endemic bee genus Flavipanurgus Warncke Hymenoptera: Apoidea: Andrenidae): Ecological and genomic data reveal a hidden species

Ichneumonid wasps of the subfamily Mesochorinae: new replacement names, combinations and an updated key to the World genera (Hymenoptera: Ichneumonidae)

The genus Hylaeus Fabricius in Central Asia (Hymenoptera: Apoidea: Colletidae)

Extending rarity: discovery of the rare braconine genus, Carinibracon van Achterberg (Hymenoptera: Braconidae) in the Oriental region with the description of a new species from south India

Aprostocetus chilophagae new species (Hymenoptera: Eulophidae) from South Dakota, with taxonomic notes on A. bromi (Kostjukov) and A. nebraskensis (Girault)

Notes on the subfamily Stenogastrinae (Hymenoptera: Vespidae) in the Philippine Islands, with description of nine new species